I love Jen Campbell's booktube and she has spoken really highly of husband and wife team Nicci French. Jen recommended reading 'The Red Room' as it would be a great litmus test to see if you would like them. Well I did, and I have just finished Blue Monday which is the first in their Freida Klein series. There's great writing, plot, and characterisation. French satisfies with twists but also gives the reader enough to solve parts of the crime.